Mewtwo-Mega-Y @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
- Sing  
- Shell Smash  
- Fissure  
- Photon Geyser  

Yveltal @ Fist Plate  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Power Trip  
- Judgment  
- Moongeist Beam  

Mewtwo-Mega-X @ Focus Sash  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Mild Nature  
- Photon Geyser  
- Light That Burns the Sky  
- Mach Punch  
- First Impression  

Deoxys-Speed @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 252 Atk / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
IVs: 0 Atk / 0 Def  
- Lovely Kiss  
- Sheer Cold  
- Stealth Rock  
- Parting Shot  

Regigigas @ Leppa Berry  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Recycle  
- Shore Up  
- Extreme Evoboost  
- Sunsteel Strike  

Chansey @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
IVs: 0 Atk  
- Spore  
- Whirlwind  
- Shore Up  
- Parting Shot